“We have still not arrested anybody, but the suspicion is on the LTTE,” Nanayakkara said. Rebel spokesman Rasiah Ilanthirayan did not answer calls seeking comment.
A suicide bomber killed an aide to Social Services Minister Douglas Devananda in November in a failed assassination that was recorded by security cameras. Bombing attacks in 2006 also failed to kill Army Commander Lt Gen Sarath Fonseka and Defence Secretary Gotabhaya Rajapaksa.
The last successful assassination took place in June 2006, when the rebels killed Maj Gen Parami Kulatunga, the country’s third-highest-ranking military officer.